The number of people served by advanced wastewater treatment plants doubled between 1968 and the mid-1990s, but because the treatment plants _______________________, the quantity of waste emitted into the water after treatment ___________________ .
A. became so much more effective; decreased by about one-third
B. became so much less effective; increased by about one-third
C. remained ineffective; remained the same
D. moderately improved; increased by 10%
A. became so much more effective; decreased by about one-third
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If an element has 18 protons, 20 neutrons, and 18 electrons, which expression correctly identifies the element?
A. argon-18 B. calcium-38 C. argon-20 D. calcium-20 E. argon-38
Which of the following terms best describe the ability of a living system to repair damage after an external disturbance?
a. Inertia b. Persistence c. Constancy d. Resilience e. Diversity
Based on what you have learned in this investigation, how would you
characterize the impact of a hurricane on New York City. Would it be minor, major, or catastrophic? Explain your answer. What will be an ideal response?
A soft suction hose is used to connect a pumper to a _____.
a. hydrant b. standpipe/FDC c. master stream device d. static water supply